If anyone's interested in reproducing, increasing system load to over 5000, decreasing ANR ping interval to 100ms, and running with the full valgrind options seems to reproduce the issue within 20-40 iterations.
If anyone's interested in reproducing, increasing system load to over 5000, decreasing ANR ping interval to 100ms, and running with the full valgrind options seems to reproduce the issue within 20-40 iterations.